Bilbo Baggins wrote:

At the weekend we had a new heating and hot water system installed. We went
the way of Unvented Mains Pressure and had a new Potterton boiler and a
Megaflow system.

We are really delighted with the performance (instant power showers) and the
quietness of it but since the work was done I have noticed a strange noise
coming from the gas meter.

When the gas is flowing the meter makes a burbling noise (rather like
bubbling water). Everything works fine otherwise and it could be that the
meter has always done this.

Am I being paranoid?

From a safety point, yes.

The meter will probably make wheezing noises when passing 2 m^3/hr or
more (about 20kW).
The mater may well be seriously under or overcharging you though.
Also the meter outlet pressure may be fluctuating unacceptably (although
they gas installer should have spotted that --- um?)

--
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at www.diyfaq.org.uk
Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html
Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html